Bolt-and-latch lock.



P. DURET.

BOLT AND LATCH LOCK.

APPLICATION HLBD APR 9. 1909.

954,427. Patented Apr. 12,1910.

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BOLT-AND-LATCH LOCK.

Specification of Letters Patent.

Application filed April 9, 1909.

Patented Apr. 12, 1910.

Serial No. 488,938.

To all whom it may concern:

Be it known that l, Pinnen Donar, a cit-izen of the Republic ot France,and .resident of 53A, Rue des Minimes, Marseille, Bouchesdu-Rhne,France, have invented a VBolt-and- Latch Lock, of which the following isa specication.

This invention relates to improvements in bolts and latch locks, whichmay be used in connection with a series of tumblers similarly to thestructure usually designated with the Brahmah.

An object of the invention is to provide a lock, wherein a latch isarranged slidably in horizontal direction and wherein a plurality oitbolts are simultaneously actuated in vertical direction.

Another object is to provide means :t'or returning the vertical boltsautomatically in their releasing position.

Further objects will be more t'ully described in the followingspecification, and will be pointed out in and by the appended claims.

In the drawing', Figure l, is a front clevat'ion of the lock. Fig. 2, isan elevation of the lock with the cover removed. F ig. 3, is a verticalsection. F ig. Lt, is an elevation oitl some details ot the lock. Fig. 5is a horizontal section of the same. Fig. 5, is another' horizontalsection with some modified details. Fig. G is an elevation of the lockwith the cover removed, showing modifications of this construction.

Similar reference letters indicate similar parts throughout the drawing.

In Fig. l, the casing t is shown with a horizontal latch c and verticalbolts A guard pivotally mounted on the rivet z' is adapted to cover thekeyhole ze. By reference to Fig. 2, it may be noted that the latch 0 isprovided with a tail piece, onto which a handle is secured, extending tothe opposite side of the casing. The latch c has a preterablyrectangular recess in which a slide c is movably disposed. A pluralityot recesses in the slide c serve t'or receiving the pins It, which incowaction with the key are adapted to impart reciprocatory motion tosaid slide. A spring cl fastened with one end to the slide and restingwith the other end against t-he latch c, serves for maintaining thedistance between the slide and the latch and for returning the same intostarting position. A preferably horizontal recess p is provided `to thele't't.

in the slide c and a pin 0 is slidably secured in said recess. 'lhe pin0 serves as a pivot point .t'or two members n, which in eoaction with aplurality ot similar members, actuate the bolts j. The members n serveas lazy tongs, increasing or decreasing` the distance between the boltsaccording to the position ot' the pin o with respect to the pivot g onwhich the lazy tong members are mounted. A spring (1,. secured with oneend to the casing and with the other end cngaging the pin o serves -formaintaining the bolts in inoperative position. The locks ot doorsusually are arranged so that the upper bolt necessarily must be longerthan the lower bolt, and by this means the two bolts j' are kept intheir releasing position7 the upper bolt t'orcing by gravity the pin olVhen the key is inserted into the keyhole a', the slide is moved to theright by the rotation oi the key and the latch advances, the spring (lmaintaining the distance between the latch and the slide, the furtheradvance movements ot' the slide will actuate the bolts ln Fig. 5, thehorizontal sectional view is shown, wherein the members 'n are arrangedin a di'il'erent way from the construction shown by liig. 5. The lock isactuated in a way which is very well known to any expert skilled in theart by first inserting the key horizontally pushing the same toward thepins L and by a turning of the key within the key-hole.

In Fig. (i, spring Z is not secured to the latch e, but into the cornerof the casing, supporting thereby the advancing movement of the key.

As indicated in Fig. 3 in dotted lines, a knob may be attached to thecasing, which under co-action with the pin l1, serves lor advancing theslide c. The knob serves the purpose oit' opening or closing the lockfrom the inside ot' the room, a key only being then necessary 'Foractuating the lock from the outside. The knob may be astened to a studriveted in a plate underneath the slide which may be actuated by the pint. The fastening oit the knob to the door does not form the subjectmatter of this invention and is well known to any expert in the art.

I claim- 1. In a lock the combination with a casing, a latch providedwith a recess, a slide mov-ably secured in said recess, a plurality ofvertical bolts and means in co-action with coaction With said pins7 andto displace l,10 a key for displacing said slide and actuatthereby saidlatch and bolts.

ing simultaneously said latch and said bolts. In testimony whereof IaIiX my signature 2. In a lock the combination With a oasin presence oftWo Witnesses. ing7 a latch provided With a recess, a slide PIERRE DURETmovably secured in said recess, a plurality of Vertical bolts aplurality of pins movably Witnesses: secured in said slide7 and a key,said key I. GAUBERT, being adapted to actuate said slide under YBoUssIER.

